Calculating-machine.



B. BEHR.

CALCULATING MACHINE.

APPLICATION FILED AUG. 28, 1911.

1,055,856. Patented Mar. 11,1913.

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CALCULKTING-MACHINE.

T 0 all whom it may concern:

Be it known that I, BERNHARD BEH'R, of

19 Hamburgerstrasse, Dresden, in the Kingdom of Saxony, in the German Empire, company director, have invented certain new and useful Improvements in Calculating- Machines, of which the following is a specification.

This invention relates to a device by means of which it is possible, when required, either to calculate and to Write simultaneously, or only to calculate or finally only to write'on a writing calculating machine.

The present invention consists in. put-ting into and out of operation, the calculating and writing mechanism by depressing keys, and the means for the putting into and outof operation is substantially simplified and more certain.

The operating movement is efi'ected by means of the ratchet wheel F and a connecting rod G operated by the printing lever 25. The movement of the printing hammer is obtained by means of the printing lever t, and the rod 00.

In the accompanying drawings, Figure 1 is a section through the machine, Fig. 2 shows the parts of the rotating device, Figs. 3 to 5 show details.

On the shaft F of the ratchet disk F is mounted a segment 4. On a pin 5 of this segment 4 is rotatably mounted a pawl lever 7. The connecting rod G operated by the printing lever t is hinged to the segment 4 by a pin 8. If the connecting rod G is reciprocated inthe direction of the arrow 6, by means of the printing lever t, the tooth 9 of the pawl 7 engages behind one of the ratchet teeth F of the ratchet disk F and causes the latter to travel through a quarter of a revolution about its shaft F. By means of a toothed wheel (not shown), which is rigidly connected to the ratchet disk, the main driving shaft for the counting mechanism is operated, through a complete revolution. The pawl 7 is provided with a rearward extension 10, by means of which the calculating mechanism is put out of operation so that the machine only prints or writes, when the key 1 is depressed. This key 1 has the lower end of its stem rigidly connected toa shoulder 11, which latter is Specification of Letters Patent.

Application filed August 28; 1911.

Patented Mar. 11, 1913.

Serial No. 646,309.

provided with a finger 12 (see Fig. 4). This finger 12, on depressing the key 1, presses the rearward extension 10, of the pawl 7 downward, rotates the pawl about the pin 5, and raises the tooth 9 from the ratchet disk so that on the movement of the connectmg rod G, in the direction of the arrow b, the tooth cannot engage with the edge of the notch F of the ratchet disk.

The operating keys 1, 2 and 3 are each provided with an adjusting pin 13 which on commencing to depress the corresponding key, acts upon the inclined surface 14, of the locking bar 15, which is under spring action and moves this laterally. On further depressing the keys the pin 13 engages with the notch 16 provided in the spring operated rod 15 whereby the pin 13 and the corresponding key are retained in their low ermost position.

If the calculating mechanism is again to be brought into operation then one of the keys 2 or 3 is depressed; in this manner the locking bar is again moved to the left, the pin 13 of the key 1 moves-out of the slot 16 and the key rises, while the recently depressed key is retained in its lowermost position. The key 2 merely serves to release the keys 1 or 3 for adjusting the machine for calculating and writing. The key 3 serves to put the printing mechanism out of operation if the machine is merely required for calculating. For this purpose the stem 17 of the key 3 is extended such a distance downward that when depressed, it engages behind a pin 18 of the connecting rod av connected to the printing hammer and prevents the said rod from being moved by the printing lever in the direction of the arrow 0. The hammer connected to the rod :1:

will therefore not strike and the machine I roca-ting key for rendering the printing In testimony whereof I have hereunto set actuator rneans inoperative, a reclprocatlng my hand in presence of two Subscribing wit restoring key, and a spring controlled locknesses.

ing. bar havmg actuatingand locking por-- BERNHARD BEHR. 5 tions, each of said keys'having a pin coact- Witnesses:

mg with the actuati and locking portions PAUL ARRAS,

of said bar, substantia ly as described. CLKRE SIMON. 

